The site of the Samoan Parliament Complex Redevelopment Project is in a coastal environment hazard zone as a result of high risk of several hazards, including damaging winds and flooding due to stormtides. This paper presents the findings of detailed hazard, vulnerability, exposure and adaptation assessments, and prioritises risk reduction measures based on the findings of cost benefit analyses, as well as other considerations.

As a result of higher intensity rainfall events in the future, as well as a general increase in sea level, the frequency and depth of localised flooding of the site during periods of heavy rainfall are expected to increase. No significant change is anticipated in the exposure of the buildings to extreme wind gusts between present day and 2045–2055, but projected increases in the frequency of extreme high temperatures have relatively high certainty and are substantial. Inundation as a result of a cyclone-related stormtides is the highest risk for the site. By 2065, 50- and100-year stormtides could be 3.0 m and 3.2 m above mean sea level, respectively, compared to 2.6 m and 3.0 m for the same events in 1990. Water velocities experienced during such stormtides are projected to increase from 1.5ms⁻¹ (in 1990) to 1.9ms⁻¹ by 2055.

Relocating the Parliamentary Complex would alleviate all of the key risks that were identified. However, for cultural and historic reasons this response was not favoured by the Government of Samoa. Two key ways to manage the identified risk of damaging stormtides were assessed, namely to increase the height of building platforms above the business as usual case of meeting the design code in force at the time (i.e. finished floor level at 2.8 m above mean sea level), or to increase protection of the entire site by raising the heights of the surrounding sea wall and embankments. Cost benefit analyses showed that raising finished floor levels was the much more cost-effective option for protecting the new buildings from damage due to stormtides.

The new Parliamentary Chamber was officially opened in March 2019. Its climate resilient design reflects the findings of the above assessments, including the prioritised risk reduction measures.

萨摩亚议会综合体重建项目的场地位于沿海环境危险区，因为存在多种危险的高风险，包括破坏性的风和暴风雨造成的洪水。本文介绍了详细的危害，脆弱性，暴露和适应性评估的结果，以及基于成本效益分析的发现以及其他考虑因素而确定的优先级降低风险的措施。

由于将来出现更高强度的降雨事件，并且海平面总体上升，因此预计在强降雨期间该地点的局部洪水的频率和深度将增加。预计从现在到2045-2055年，建筑物在极端阵风中的暴露不会有显着变化，但是预计极端高温频率的增加具有相对较高的确定性并且是可观的。由于飓风相关的暴风雨淹没是该地点的最高风险。到2065年，50年和100年的潮汐可能分别比平均海平面高3.0 m和3.2 m，而1990年同一事件的潮汐分别为2.6 m和3.0 m。预计在这些潮汐中经历的水速将从1.5ms增加^-1（1990年）到2055年达到1.9ms ^-1。

搬迁国会大厦将减轻所有已确定的关键风险。但是，由于文化和历史原因，萨摩亚政府不赞成这种反应。评估了两种方法来管理已确定的破坏性暴风雨风险，即增加建筑物平台的高度，使其与当时达到现行设计规范的情况保持一致（例如，最终楼层在平均海平面以上2.8 m处） ），或通过提高周围海堤和堤防的高度来增强对整个站点的保护。成本效益分析表明，提高成品地板水平是保护新建筑免受暴风雨破坏的更具成本效益的选择。

新的议会会议厅已于2019年3月正式开放。其适应气候变化的设计反映了上述评估的结果，包括降低风险的优先措施。